Fix key name in GitLab integration example pipeline job config

Author: shariff-6

docs/build-your-software-catalog/sync-data-to-catalog/git/gitlab-v2/example-pipelines/_gitlab_integration_example_pipeline_job_config.mdx

@@ -17,7 +17,7 @@ resources:
             description: .description
             link: .web_url
           relations:
-            service: .__project.path_with_namespace
+            project: .__project.path_with_namespace
   - kind: job
     selector:
       query: "true"